.app-container{
  width: 100%;
  margin: 0;
  padding: 0;
  // 头部
  .arrow{
    position: absolute;
    top: 2%;
    left: 2%;
    img {
      width: 2rem;
      height: 2rem;
      vertical-align: middle;
    }
  }
  .header {
    width: 100%;
    margin: 0 auto;
    height: 4.3rem;
    line-height: 4.3rem;
    text-align: center;
    p {
      font-size: 1.2rem;
      font-family: PingFang SC;
      font-weight: 600;
      color: #000000;
    }
  }
}
